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Journal ArticleDOI

Equations of motion for a two-axes gimbal system

Bertil Ekstrand
- 01 Jul 2001 - 
- Vol. 37, Iss: 3, pp 1083-1091
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TLDR
In this article, the equations of motion for the two-axes yaw-pitch gimbal configuration are discussed on the assumption that the gimbals are rigid bodies and have no mass unbalance.
Abstract
Equations of motion for the two-axes yaw-pitch gimbal configuration are discussed on the assumption that the gimbals are rigid bodies and have no mass unbalance. The equations are derived and different terms are brought together into separate groups for the sake of clarity and to facilitate certain interpretations. Different kinds of disturbances and their elimination or reduction are discussed, as is the yaw gain dependence on the pitch angle. Inertia cross couplings are also given. The purpose is twofold: to simplify the picture of the two-axes gimbals and to further illustrate the properties of this configuration.

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Citations
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Proceedings ArticleDOI

Target Acquisition, Localization, and Surveillance Using a Fixed-Wing Mini-UAV and Gimbaled Camera

TL;DR: This work presents a field-tested mini-UAV gimbal mechanism and flightpath generation algorithm as well as a human- UAV interaction scheme in which the operator manually flies the UAV to produce an estimate of the target position, then allows the aircraft to fly itself and control the gIMbal while the operator re fines or moves the target location as required.
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Stabilization loop of a two axes gimbal system using self-tuning PID type fuzzy controller

TL;DR: The simulation results obtained in different conditions prove the efficiency of the proposed fuzzy controller which offers a better response than the classical one, and improves further the transient and steady-state performance.
Proceedings ArticleDOI

Robust control and modeling a 2-DOF Inertial Stabilized Platform

TL;DR: In this paper, an uncertain linear model for an Inertial Stabilization Platform (ISP) is presented, where the system has a 2 degree of freedom (DOF) gimbal which will be attached to a moving vehicle and the optical sensors mounted on the stabilizer.
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Hardware Implementation of an ADRC Controller on a Gimbal Mechanism

TL;DR: Based on simulation and experimental results, the effectiveness of ADRC in the presence of external disturbances and parameter uncertainties is illustrated.
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A Dynamic Model and Control Method for a Two-Axis Inertially Stabilized Platform

TL;DR: A nonlinear dynamic modelbased on the geographic coordinate and a compound control method based on the back-stepping sliding mode control and adaptive radial basis function neural network (RBFNN) are proposed to realize high-performance control for a two-axis inertially stabilized platform.
References
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Journal ArticleDOI

Precision Stabilization Systems

TL;DR: In this paper, the relationship between kinematic and geometrical coupling and the effect of structural compliance on the stabilization control loops is examined in depth by considering systems implemented with either a conventional two-axis gimbal or a traditional half-angle mirror assembly.
Journal ArticleDOI

Stabilization of Precision Electrooptical Pointing and Tracking Systems

TL;DR: In this paper, the pointing vector and angular rate relationships for various optical elements as well as techniques developed forestablishing comprehensive analytical models of precision electrooptical stabilization systems are presented, since the performance of such systems may be critically dependent on the disturbance environment and the integrity of the associated mechanism.